We have had these diamond stones custom made for the archer that is tired of making short strokes while sharpening broadheads on commercially available sharpeners. Here we offer diamond-sharpening stones to match the length of files commonly used on wooden sharpening blocks. These stones can be drilled and counter sunk to screw directly to a wooden block or by using one of the many different types of non-porous glues available. Diamond Sharpening Stones can also be used as a single flat stone to sharpen 3 blade broadheads and knives. If you are an archer that likes to do things on your own, here is your chance to do it right with these inexpensive diamond stones. These stones come in three different grits 400-coarse, 600-mediuem and 800-fine. Measure 9 ½" long x 1 1/8" wide. Sold per each.